"We have inherited perhaps one of the most ominous signs of the previous regime," said Enicas during the presentation of a plan to search for missing persons. He added that Mexico "is a great clandestine grave."

"The forced disappearance, either by agents of the state or by individuals, is one of the most debilitating problems that our society is experiencing," he said.

AMLO and Encinas said that the fundamental objective of the plan is to design public policies to locate the missing persons, in addition, to prevent, investigate, and punishing responsible.

"We seek to develop a differentiated approach that allows us to attack in a better way the task of searching throughout the country that, unfortunately, has become a huge clandestine grave," said Encinas. "We must act immediately to recover people linked to forced disappearance and face problems related to trafficking in persons," he said.

The planning will include families and international organizations.

According to Encinas, between 8 and 10 percent of the total missing people are migrants, mainly from Central America. The most vulnerable population are from 17 to 29-years-old.